Check-nut.



PATHNTHD MAY 28, 1988.

C.v H. CHAPMAN.

CHECK NHT. APPLIOATION FILED FEB. 4, 1903. BENEWED AUG. 12, 1907.

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I A Trop/v5 y mmm C IU

W/ TNKSSES:

PA-TENTEDMAY 26, 1908. C. H. CHAPMAN. Y

CHECK NUT. APPLIoATIoH FILED rms. 4, 190s. BENHWBD AUG. 12

2 SHEETS-SHEET 2.

W/ TNE SSE S il l INVENTOH A Tran/v5 Y nut or ot CHARLES H. GHAPMAN, OF GROTON, MASSACHUSETTS.

CHE CK-INUT Specification of Letters Patent.

PatentedMayf26, 1808.

pplication led February 4l., 1903, Serial No. )$1,881. Renewed August 12, 190'?. Serial No. 388,248.

To all whom it may concern:

Be it known that I, CHARLES' H. CHAPMAN, a citizen oi the United States, residing at Groton, in the county of Middlesex and State of Massachusetts, have invented a certain new and useful improvement in Check-Nuts, of which thefollowing is a full, clear, and enact description.

iThe object of this invention is to provide a device for iixing an adjustable object in given osition so that it inay not become displace in use.

Speciically the invention relates to a check-nut, that is to say, to a screwthreaded device caplable of bein r screwed up against a er adjustable object to hold it in given position.

The invention herein is particularly useful in securing or locking the adjustable cones of ball bearings, and it is herein so illustrated and described, but without thereby limiting the scope or applicability of the invention.

The invention consists of an annular or other shaped nut having a locking device comprising a flat spring rigidly applied to its l periphery and engaging a stud which is arranged in the nut to engage the object to which the nut is applied and hold said nut in iven position against displacement in either irectlon to lock anotherobject in place.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a side .elevation and partial section of a ball bearing. Fig. 2 is an end view thereof. Fig. 3 is a front view andFig. 4 an edge view, both partly in section, showing'one form'of check-nut. Fi 5 is airont view and Fig. 6 an edge view o another form of check-nut. Figs. 7 and 8 show in perspective respec- --tively the lookin r stud andits spring used in the check-nut o Figs. .1 and'3-4. Figs. 9 and 10 show in perspective respectively the locking stud and spring used in the check-nut of Figs. .5-6. Fig. 11 is a sectional side elevation and Fig. 12 a partly sectional rear elevation oi' the invention applied to another form of check-nut. Figs. '13 and 14 show Views similar to Figs. 11 and 12, excepting that a lain Studis substituted for a screw stud. Figs. 15 and 16 show respectively a longitudinal section and a sectional rear ele vatlon of another embodiment of the invention; and Figs. 17 and 18 are like Figs. 15 and 16 saving that an unthreaded or plain stud is substituted for a screwv stud.

tainlng load-bearin(r balls and separatingballs, combined with rounding housing or other object 7. It is desirable to set up the cone to insurethe proper Working of the ball bearing, andthis a track o and a sur- 1s done by running it in or out on the screW- thread of the axle. When the desired ad justment is obtained, it is highly desirable to retain it against alteration by use, and to this end thecheck nut is run on the threaded axle up against the cone and' held in given position by a radial s'tud 9 engagin one of the grooves 2. As shown, this chec nut is of ring form, but its contour may be as desired.'`

In Figs. 1, 3, 4 and 7 the stud is made as a screw, with a square or other head 10 by which it may be engaged to run it in and out of the ring. Aflat spring 11 is secured peripherally to the ring by a rivet 12 or other means,

engagement with the head ofthe stud and turned aside upon its rivet, as indicated byk the dotted lines in Fig. 4. Instead of a screw stud, there may be used a plain or Unthreaded stud 14, as shown in Figs. 5, 6 and 9, which is held in lace b`y spring 15 riveted to the ring as in ig. 5, and having a round hole 16 to engage a round head 17 on the stud.

In Figs.` 11 and 12 is shown a check-nut 18 having a taperinfr split shank 19, with the screw stud 9 and spring 11 applied to its head, such a device being deslgaed chieiy for usein fixing the position of an adjustable cone y20.

ln Figs. 18 and 14 the plain stud 14 and splring 15 are used in the same sort 'of split c eck-nut.

lin Figs. 15 and 16 is shown a check-nut having ata )ering shank 21, and split through shank and cad as shown at 22, and having the screw stud 9 and spring 11 applied toits but with the lain stud 14 and springvl. I The split c eck-nut by beingcontracted `bi it Ot course, the locking stud and the cooper as it is screwed up into engagement With the cone, or other object, bites upon the axle and thus increases its hold upon the object to be locked. I

In all cases the check-nut acts in that capacity as usual, but the locking stud cooperating with the groove in the arde xesl the check-nut practically beyond' the possi-- bility of displacement by accidental' turn in in either direction, and so 'insures staof adjustment. A

ating part (the groove in the axle, in this instance) Will be of such shape or character or construction as the parts u on which they are a plied Will require, and t e invention is not imited to the details shown and described', sinee it is sufficient if the check-mitv carries a movable art Which may be set up xedly against a hxed member and at the same time be capable of being freely disengaged therefrom when desired, without mutilation of parts and `admitting of re-nse.

What I claim is 1. A check-nut, aV longitudinally grooved screwthreaded member to` which it is ap* plied, and an adjustable member on said screwthr'eaded member engaged by said check-nut, said check-nut having a radially arranged locking stud adapted to engage the groove for fixin said check-nut in iven position against isplacement in either ireci tion, and a flat spring pivoted at one end to the nut and having a hole at its free end adapted to engage the stud to positively hold the stud from dislocation and also adapted to be lilted ont of engagementwith the stud and turned aside to permit the release of the stud and check nut.

2. A check-nut, a longitudinally grooved locking screw-stud a Aspring riveted to the nut by one "ally an permanently fixed periphera essen@ screwthreaded member to which 'it is applied, and an adjustable member on said screwtlireaded member engaged by said check-nut, said cheek-nut made as an internally screwthreaded ring, having a radially arranged apted to engage 'the groovefor holding said check-nut in engagement with said adjustable member against displacement in either direction, and alat other end engaging the stud to dpositively hold said 'stud from turning an working loose, said spring capable of being disengage end and its from the stud and turned aside on its rivet.,Y v

3. A check nut, having a head. and a taper-- internally screw-threaded shank.- split ine longitudinally, and a looking stud arranged radially in said head for fixing said check nut in given position, and a iiat s ring having Va hole en aging said stud, sai spring pivotn y to said head.

4. Agcheek nut, having a head and an. externally tapering shank split longitudinally l and screw-threaded internally, 'a locking CHARLES H. CHAPMAN. Witnesses 1 Unas. S. HAYDEN, WE. PUTNEY.-

said stud in 

